Question: What position did Lin Biao start on May 25, 1959.
Paraphrase: Which position did Lin Biao held on May 25,1959?.
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q315475 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1959')) }